hmm, this would be perfect for HCCI engine. Currently, Mazda needs to use low-boost supercharger and spark plug in order to keep combustion in line across whole range. With variable compression they...

I slashed yearly power usage from 30MWh to 11 MWh by converting from direct electrical to geothermal heating. Nowadays, 1/3 of bill is household electricity (ovens, TV's computers, lights) and 2/3's...